baber/WOPTO huggingface dataset:
Patent GB-571014-A (GB)
Title: Manufacture of 2-amino-4:6-dimethoxy-pyrimidine
IPC: C07D239/52
Filed: 1944-01-27
Abstract: 2-Amino-4 : 6-dimethoxy-pyrimidine is obtained by heating 2-amino-4-chloro-6-methoxy pyrimidine with sodium methoxide at above 100 DEG  C. under substantially atmospheric pressure and in the presence of an appropriately high-boiling inert organic solvent or diluent.  The 2 - amino - 4 - chloro - 6 - methoxypyrimidine may be made in situ by reaction at room temperature of 2-amino-4 : 6-dichloropyrimidine with 1 mol. of sodium methoxide.  In an example, powdered 2 - amino - 4 : 6 - dichloro - pyrimidine (1 mol.) is added with cooling to a solution of sodium (2 atoms) in dry methanol, dry xylene is added and the mixture heated for 3 hours at 140-150 DEG  C. under reflux; the mixture is then shaken with water and benzene and the benzene layer separated and distilled to obtain the desired product.  Other specified solvents or diluents are chlorobenzene, pseudocumene and toluene.
Patent GB-884276-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J75/00
Filed: 1959-01-15
Abstract: The invention comprises compounds of the general formula <FORM:0884276/IV (b)/1> (wherein the 1,2 linkage may be a single or double bond, X is carbonyl or b -hydroxymethylene, Y is hydrogen or fluorine, R is hydrogen or acyl derived from an organic carboxylic acid together with processes for their preparation by submitting a corresponding 11b -hydroxy-16-unsubstituted compound to fermentative hydroxylation in a nutrient medium using Streptomyces roseochromogenus or Streptomyces sp. A.T.C.C.11009 and if required acylating the resulting 16a -hydroxy compound, oxidising the 11b -hydroxyl with a chromic acid oxidant and finally saponifying the 16-acyloxy group to yield a 16,17-dihydroxy-3,11,20-triketopregnene or pregnadiene compound. Detailed examples are given.  Specifications 724,094, 863,777 863,778, 864,380, and 864,381 are referred to.ALSO:Pharmaceutical compositions suitable for treatment of cirrhosis of the liver, nephrotic and adrenogenital syndromes comprise steroids of the formula <FORM:0884276/VI/1> (in which the 1 : 2-carbon atom linkage is a single or a double bond, X is carbonyl or b -hydroxy-methylene, Y is hydrogen or fluorine, and R is hydrogen or an acyl radical of an organic carboxylic acid) together with a pharmaceutical carrier for oral, topical or parenteral use.  The compositions may take the form of tablets, pills, capsules, ointments, creams, lotions, or conventional forms for injection, and may also incorporate coacting germicides and/or antibiotics. Specification 724,094 is referred to.
Patent GB-1402952-A (GB)
Title: Apparatus for determining the position of unbalance of a rotary body and bringing said position into coincidence with a predetermined fixed station in space
IPC: G01M1/22
Filed: 1973-01-11
Abstract: 1402952 Balancing rotary bodies HOFMANN GmbH GEBR [trading as HOFMANN KG MASCHINENFABRIK GEBR] 11 Jan 1973 [20 March 1972] 1578/73 Heading G1N An arrangement for balancing a rotary body e.g. a vehicle wheel 1 on a spindle 2, includes a measuring device 20 in which the measured angular position of unbalance of the body relative to a datum position is stored as a sine-wave voltage of fixed frequency but whose phase is given by said angle, this voltage continuing to be available after the balancing apparatus has come to a halt. This voltage is converted into fixed-phase pulses which operate a bi-stable circuit to switch it to a first state. A reference signal appropriate to said datum position is derived from terminal 24 of the device 20 and is fed to a phase shifter 3 on the spindle 2 so that the phase of this signal varies as the spindle is rotated. A circuit 25 converts the signal to pulses which switch the bi-stable circuit to its other state. The outputs at 26 and 27 are rectangular waveforms of opposite mask/ space ratio. These are converted to direct current by integrators 28, 29 which in turn supply lamps 31, 32. The rotor may then be rotated shifting the phase of the output from 25 until the lamps are equally bright. The lamps illuminate arrows (9, 10), Fig.1 (not shown), and coarse adjustment is made by rotating until these appear to be equally bright. Fine adjustment is then made by bringing the reading of an instrument 30 to zero. The rotor is now in the position at which balancing adjustment is to be made.
Patent GB-558556-A (GB)
Title: Manufacture of new condensation products
IPC: D06P1/52
Filed: 1942-02-06
Abstract: 558,556. Resins. SOC. OF CHEMICAL INDUSTRY IN BASLE. Feb. 6, 1942, Nos. 1581 and 1582. Convention dates, Feb. 7, 1941, and Dec. 23, 1941. Samples furnished. [Class 95] [Also in Group IV] Resinous compounds containing at least one carboxyl group in free or salt form, or corresponding acid halides, are converted into halogenmethyl derivatives by treatment with formaldehyde and a hydrogen halide, or with an α: a'-dihalogen-dimethyl ether; or, when a carboxylic acid halide is used, with formaldehyde alone. One or more of the halogen atoms in the resulting halogen-methyl derivatives may then be replaced by groups imparting or enhancing water-solubility, by reacting with e.g. triethylamine, pyridine, cyanamide, dicyandiamide, or a thiourea capable of reacting in the iso-form. Specified starting resinous compounds are abietic acid, dextro- or laevo-pimaric acid, colophony, resin acid soaps, artificial resins containing free carboxyl groups and salts thereof. The products obtained may be used as textile assistants, for increasing the resistance to "slip" of artificial silk fabrics, and for rendering fast to water dyeings produced with dyestuffs containing sulpho-groups. According to examples :- (1 and 2) sodium abietate or colophony is reacted with α: α<SP>1</SP>-dichlorodimethyl ether, and the product is then treated with thiourea : (3) colophony is reacted with α: a'-dichlorodimethyl ether, and the product is treated with dicyandiamide : (4 and 5) a sodium resinate soap is reacted with a: a'-dichlorodimethyl ether, and the product is treated with trimethylamine, or with allylthiourea. Samples are furnished of:- (A) the pyridinium salt of the chloro-methyl derivative of a resinous condensation product of phthalic anhydride and glycerine, and (B) the pyridinium salt of the chloro-methyl derivative of colophony.
Patent GB-934959-A (GB)
Title: Improvements relating to fuel supply systems
Inventor: STEPAN AUGUST
IPC: F23K5/00
Filed: 1960-01-15
Abstract: 934,959. Supplying liquid fuel to burners. FAIREY AVIATION Ltd. Jan. 13, 1961 [Jan. 15, 1960], No. 1611/60. Class 75 (1). [Also in Group XXVI] A fuel supply system for the burner of a jet unit disposed in a helicopter blade at a distance from the hub includes a valve 14 situated adjacent to the burner and means for controlling the valve by a variable air pressure transmitted from the hub. The valve is also controlled by the fuel pressure at the burner or by the rate of fuel flow and by the pressure in the combustion chamber 20. The valve is connected to a small diaphragm 16 and to a large diaphragm 18, the small diaphragm 16 separating the fuel on the downstream side of the valve from an air pressure chamber 17 and the large diaphragm 18 separating the air pressure chamber 17 from a chamber 19 communicating with the combustion chamber 20. The air pressure chamber 17 is connected by a duct 25 to a space 26 containing a piston valve 28 adapted to connect the space either to a vent pipe 30 or to a pipe 29 leading to a pressure air duct 13 supplying combustion air. The piston valve is moved by a diaphragm 31 exposed on one side to the air pressure in the space 26 and on the other side to the fuel pressure in the hub. The hub fuel pressure is controlled by a manually operated cam 38 acting on the spring 37 of a pressure-reducing valve 35.
Patent GB-283877-A (GB)
Title: Improved process of halogenating organic compounds
IPC: C07C17/16
Filed: 1928-01-18
Abstract: 283,877. I. G. Farbenindustrie Akt.- Ges. Jan. 18, 1927, [Convention date]. Halogenated organic compounds.-The mixture of products obtained in the halogenation of organic compounds is treated with an alcohol, particularly methanol, under such conditions as to effect a reaction between the alcohol and the hydrogen halide present in the mixture. In one example, a mixture of methyl chloride and chlorine is passed through a chamber heated to 360-380‹ C. and the mixture of methyl, methylene, and hydrogen chlorides so obtained is treated directly in a second chamber with boiling methanol. The product, comprising a mixture of methyl and methylene chlorides, is separated into its constituents and the methyl chloride is then treated afresh. In another example, a mixture of methane and chlorine is passed through a tube heated to 370‹ C. and the product, comprising methane, methyl chloride, more highly chlorinated products in small amount, and hydrogen chloride, is treated with gaseous methanol and passed directly through a second tube containing a catalyst such as silica gel loaded with zinc chloride, heated to 160-200‹ C., the hydrogen chloride is thus converted into methyl chloride, which is separated from the final product. The Specification as open to inspection under Sect. 91 (3) (a) contains a further example in which benzene is treated with chlorine in an autoclave, in the presence of iron and iron chloride, and, when the chlorine has been absorbed, ethyl alcohol is added. The mixture is heated under pressure at 120‹ C., whereafter the contents of the autoclave are fractionated; the products comprise ethyl chloride, chlorbenzene. some o- and p-dichlorbenzene, and a small amount of 1 : 2 : 4-trichlorbenzene. It is stated that the. process may be effected at about 100‹ C. at ordinary or increased pressure in the presence or absence of water or a catalvst or at 150-300‹ C. in the gaseous phase in the presence of a catalyst such as a metal halide or a highly porous substance. This subject-matter does not appear in the Specification as accepted.
Patent GB-210090-A (GB)
Title: Improvements in gas producers for feeding internal combustion engines and the like
IPC: C10J3/00
Filed: 1924-01-22
Abstract: 210,090. Lecarme, L., and Besson, F. Jan. 22, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Filtering. - A gas-producer plant suitable for use on motor vehicles comprises a dry scrubber, Fig. II into which the gas enters by an inlet P<1> and passes through layers of material such as aluminium turnnings or broken glass arranged in passages P<4> or between metal gauze screens.
Patent GB-251008-A (GB)
Title: Improvements in and relating to lampshades and the like
IPC: F21V1/06
Filed: 1925-01-21
Abstract: 251,008. Caldwell, A. L. M. Jan. 21, 1925. Shades: shade holders. - In a lamp shade the covering material 4, which may be silk or other textile material or paper or the like, is provided with means such as hems for detachable engagement with strip-metal or wire annular members 1, 2 which are held apart by detachable stay members 3. Different shapes of shades may be obtained by varying the number and size of the annular members, for which purpose the annular members may be in the form of split-rings the ends of which may be tapered and held in position as by means of overlapping tongues or sleeves 26 which are rounded off to pass freely through the hems. The stays 3 mav each comprise two pieces of resilient strip-metal 6, 7 held together at the centre by rivets or by a metallic sleeve 8 and having tapered ends 9 rounded off and recessed to engage the rings 1, 2. In a modified form the stays 3 may each comprise resilient metal shanks 11, 12, Fig. 4, slidable in overlapping tongues 13 and prevented from slipping by means of a screw 15, the befurcated ends of the shanks having ring-engaging recesses 16 which are sometimes formed by means of an additional spring-operated member pivotally mounted on the rear of each leg of the bifurcation. The shade may be connected to the lamp or its support by means of annular members 31, Fig. 12, having upwardly or downwardly inclined adjustable wire members 30 provided with upstanding projections 32 adapted to engage in sockets 32<a> on the sleeves 8 of the stavs 3. In a modified form the shade support comprises a central portion 35, Fig. 13, having radial arms 36 in slidable engagement with arms 37, the outer ends of which have claw-like members 39 preferably of circular cross-section adapted to embrace the stays 11 and engage with one of a pair of shoulders 41, 42, Fig. 4, according as the shade is used with a depending or upright bulb. In a further modification a ring-shaped member 48, Fig. 15, carries arms comprising parts 46 sliding within ports 47 and having hooked extremities 45 to engage with one of the rings 1, 2 of the shade. In place of the ring-shaped members 35, 48, the arms 36, 47 may be provided with depending pins to engage in sockets 45 in a member such as that shown in Fig. 17. If the frame is covered with a stiff material such as cardboard the rings 1, 2 may be channel-shaped, and they may be held together by adjustable stay members of strip-metal or wire having hooked ends to engage over the rings. Instead of using split rings the annular members may be formed from two rings fitting one within the other in frictional engagement so as to grip the material between them, and the stay members may be covered with tape or other wrapping coloured to harmonise with the material of the shade. According to the Provisional Specification the annular members may be built up from a number of sections detachably connected to form closed loops, and, in order to prevent slipping, the shanks 11, 12 may have their sliding surfaces roughened or toothed.
Patent GB-142077-A (GB)
Title: Improvements in heat interchange devices such as evaporators for liquids
IPC: B01D1/06
Filed: 1920-01-21
Abstract: 142,077. Frey, E. Wirth-, (Assignee of Akt.-Ges. Kummler & Matter). April 23, 1919, [Convention date]. Cleaning externally; cleaning internally, rotary appliances for. - In a heating body such as an evaporator for liquids consisting of concentric annular chambers, a device is arranged to scrape off any solids deposited around the top of the heating chamber. Fig. 1 shows the apparatus in vertical section. The heating-chambers 2 have scrapers 6 along the top thereof, shown enlarged. in Fig. 3, which fit on them like clamps. The scraper blades are attached to vertical rods 7. adjustably carried on a horizontal rod 8 which can be rotated by a shaft 9. The scraper blades may be formed of thick wire or may be flat and may be provided with interchangeable scraping- faces. They are pressed in a resilient manner against the surface of the heating-body.
Patent GB-397862-A (GB)
Title: Improvements in processes and apparatus for washing gas
IPC: B01D47/16
Filed: 1932-01-22
Abstract: 397,862. Washing gases. HARMON, R. R., 240, Court Square, Charlottesville, Virginia, and PEABODY ENGINEERING CORPORATION, 40, East 41st Street, New York, both in U.S.A. Jan. 22, 1932, No. 2064. [Class 55 (ii).] Gas is passed through a series of hot-water sprays to remove the larger suspended particles, and then through stages wherein vapour is condensed on the finer particles which are removed by passage through successive layers of water flowing across the path of the gas stream. The washing tower is fitted with a central shaft 13 which is rotated by a motor 15 and carries at its lower part a series of centrifugal sprayers 20, 27. Each sprayer comprises a vessel with a perforated wall 21 and inclined troughs 22 are arranged on the wall of the tower to collect and return some of the projected liquid to the sprayer. Stationary screens 30 with flanges depending into seal troughs 28 surround the vessel 27. The water is circulated through the washer by a pump 37, and a spreader 35 to induce a whirling motion in the liquid supplied to the uppermost sprayer, and a settling tank 18 are provided. Steam or hot water may be sprayed into the gas from a pipe 38 under control of a thermostatic valve 39. The upper part of the tower contains a series of plates 42, Fig. 6, formed with venturi-like openings 43, and baffle grids 46 are provided above the plates. A spreader 47 is arranged above each grid to distribute water from overflow troughs 48. Cold water is delivered to the uppermost plate through spreaders 69, 70 and after flowing over the series of plates is withdrawn from the tower by means of a trough 40 and pipe 41. Thermostatic valves 57, 64 are provided in pipes connected with intermediate troughs 49 to control the flow of cooling liquid. Curved vanes 72 remove water particles before the gas reaches the outlet 12. Specifications 397,869 and 397,870 are referred to.
Patent GB-173438-A (GB)
Title: Improved non-return valve
IPC: F16K15/02
Filed: 1921-01-15
Abstract: 173,438. Dickie, C., and Crerar, L. P., (trading as Smith, A. & R.). Jan. 15, 1921. Check or non-return valves. - A non-return valve particularly applicable for use in ships' bilges and of the kind having a hollow cylindrical valve member 1 guided by ribs 2 in the casing has the top of the valve seat formed in a continuous curve with the valve chamber so that no pockets are formed for the collection of grit. The hollow valve tends to float in the liquid so that it comes gently to its seat.
Patent GB-924797-A (GB)
Title: Process for ensuring a constant content of one or more constituents of gaseous mixtures to be resolved
Inventor: HERDMANN GUNTER
IPC: F25J3/02
Filed: 1961-01-19
Abstract: 924,797. Cold separation of gas mixtures. LEUNAWERKE " WALTER ULBRICHT " VEB Jan. 19, 1961, No. 2203/61. Class 8(2). In a low temperature gas mixture separation process wherein the feed mixture e.g. expansion gases of an ammonia synthesis plant comprising hydrogen, nitrogen, methane, argon and ammonia gas is of variable quantitative composition, one or more components of the feed mixture is maintained at a given quantitative level by adding to the feed mixture variable quantities of the corresponding separated components withdrawn from the separating apparatus in volumes according to variations in the quantitative variations of the feed mixture. In operation the feed mixture which is assumed to be temporarily deficient in nitrogen having been freed of ammonia and water vapour in towers 2, 3 and cooled in an exchanger 4 traversed by counterflowing separated components is passed to a column 5 from the head of which all the hydrogen together with uncondensed nitrogen and argon is withdrawn and is passed through the exchanger 4. Condensed methane together with the remaining nitrogen and argon is withdrawn from the base of column 5 and passed into a second column 8 where it is separated into a mixture of liquid methane containing a little argon which is passed through the exchanger 4, and into a mixture of gaseous nitrogen and argon which is fed to a third column 11. Liquid argon passes from the base of column 11 through the exchanger 4 as does gaseous nitrogen or a mixture of nitrogen and argon withdrawn from the head of the column, and a portion of the so warmed nitrogen or nitrogen-argon mixture is compressed at 15 and is returned through a control valve to the feed line 1 to make up the temporary nitrogen deficiency.
Patent GB-273979-A (GB)
Title: Improvements in folders for sewing machines
IPC: D05B35/06
Filed: 1927-01-26
Abstract: 273,979. Armstrong, J. J. V., (Union Special Machine Co.). Jan. 26, 1927. Folding devices. - A support for a folder is adapted to be attached to the work support at either side of the line of feed and is provided with means for allowing adjustment of the folder to or from the needles and also across the line of feed. The folder comprises a sheet of metal bent to form a flat tube the sides of which are bent inwards gradually at 4, 5 to turn in the edges of a strip of fabric. A supporting member 6 is secured to the edge of the parts bent inwards and provides in conjunction with the lower wall 8 a guide for a reinforcing strip 10. A reversible bracket 12 is attached to the member 6 and is provided with a guiding slot 13 and a rolled edge 14 inclined at 45‹ over which the strip is passed. A shank 18 secured to. the support 6 is adapted to be connected to the spaced arms 16 of a bracket having a cylindrical arm 17 which is clamped in either of the sleeves 20 carried by brackets 19, 22 adjustably secured to the work plate.
Patent GB-1055569-A (GB)
Title: Mechanism for applying a force to the surface of a workpiece
IPC: B29C35/16
Filed: 1964-01-17
Abstract: 1,055,569. Laminates and laminating; woodworking. HOOVER BALL & BEARING CO. Jan. 17, 1964 [Feb. 12, 1963], No. 2244/64. Headings B5L and B5N. A continuous press comprises spaced platens 10, 12 (Fig. 1, not shown) having preheating sections 22a, 24a, curing sections 22b and cooling sections 22c, and steps 18, 20, through which a workpiece W is drawn by endless steel sheets 26, 28, said sheets being preheated by heaters 40, 42 which form extensions of the platens and which comprise (Fig. 3) a copper body member 48 having a base portion 50 from which tapered arcuate fins 52 emanate, the heat being provided by thermostatically controlled electric resistance heaters 60a and 60b. In order to produce a gradual temperature gradient around the fins cooling means 60 are provided consisting of a series of U-shaped tubes 62 which are cast into the fins 52, and which are connected together by tubular coil sections 64. Heaters 40, 42 are connected to the body of the press by means able to accommodate any expansion and contraction, this being achieved in the embodiment by a notch and bracket connection 54 and tongue and groove connection 58. The press may be used for laminating or case hardening.
Patent GB-632067-A (GB)
Title: Improvements in metal rollers or bobbins for trawl net ground ropes
IPC: A01K73/04
Filed: 1948-01-26
Abstract: 632,067. Trawling. PHILLIPS, J. W. Jan. 26, 1948, No. 2295. Addition to 619,306. [Class 48] A ground rope bobbin according to the parent Specification has convex sides to better withstand crushing. The flanges d, of the liner d are extended over the sides and may be hardened.
Patent GB-110856-A (GB)
Title: Mechanically Operated Staircase for Producing Scenic Effects.
Inventor: COLLINS ARTHUR
IPC: A63J1/02
Filed: 1917-02-19
Abstract: 110,856. Collins, A. Feb. 19. 1917. Theatrical appliances. -Relates to a portable rotating spiral staircase for stage use. The staircase, which is tapered, is carried by a central column 4 resting on a step bearing 7 below, and is held by a socket 6 above. The socket is carried by a beam 5 which can be raised to disconnect the staircase. Rollers 11 run on a frame 9 disposed below the stage and are mounted as castors to facilitate transport. The staircase is driven through bevel gearings 12 by an electric or other motor 14. A landing may be provided at the top of the staircase which may be fitted with illuminated or other decorative devices. Flags 25 are mounted so as to fold upwards into the hollow banisters 3, and can be released so as to fall into the position shown when required. A disconnecting clutch is fitted to the column 4 and means for driving the staircase in a reverse direction may be provided. Two or more staircases may be used together.
Patent GB-620858-A (GB)
Title: Improvements in or relating to electric cells
IPC: H01M6/04
Filed: 1947-01-27
Abstract: 620,858. Batteries. BLACKMAN, W., and PRICE, J. R. Jan. 27, 1947, No. 2465. [Class 53] The electrodes 5, 6 of a battery are located in separate compartments 2, 3 connected by a capillary tube 8. The battery may be of the Leclanche type, the electrode 5 consisting of amalgamated zinc, the other electrode being of carbon surrounded by manganese dioxide 7, the ammonium chloride electrolyte being common to both compartments and filling the tube 8. The output current of the battery is small being limited by the resistance of the liquid in the tube 8. The tube 8 is screwed into the two compartments of the battery and may be replaced by other tubes of various diameters. The electrolyte is covered with paraffin oil 13 and the compartments are sealed with pitch 11 through which pass vent tubes 14 and terminal sockets 12.